It seems you're interested in exploring the romantic storylines and city relationships for a character named Marianna Ntouvli. Given that I don't have specific details about Marianna Ntouvli or her context (e.g., whether she's a character from a book, TV show, movie, or a real person), I'll create a fictional narrative that could fit a variety of settings, such as a TV series or a novel.

In her novel Smoke & Steel , the protagonist realizes her boyfriend is cheating not with another woman, but with the city of Berlin—its clubs, its cheap rents, its freedom from responsibility. The other woman is just a symptom. The breakup scene occurs not in a bedroom, but on a U-Bahn platform, with the screech of brakes drowning out the confession.

Present-day Athens, Greece. A city of ancient stones, graffiti-tagged alleys, seaside sunsets, and relentless summer heat.

Ntouvli, M. (2018). The Sound of Falling . [Novel].